Iowa newspaper disagrees.
AAA sounds the alarm on E15 gasoline, saying sale of the increased ethanol fuel should be postponed because using it could void the warranty on some vehicles.
KTRH car pro Jerry Reynolds says E15 could cause major problems in both classic and newer models.
"The cars today, even up to 2011, were built for E10, a ten percent mix of ethanol," Reynolds tells KTRH News. "Anything more than that could cause some damage."
"For classic cars, your catalytic converter and things are most at-risk," he says. "And I don't think we've done enough studies to know if long-term engine issues will be there, especially when we're talking about older cars."
Reynolds urges drivers to check the percentage of ethanol used at the pump before filling up.
An Iowa newspaper however, found now problems with E15 gas, and even says the biofuel could have saved drivers up to $69 million.